public class KeyDemo07 {
    public static void main(String[] args) {
        int foo=100;
        for (int i = 0; i < foo; i++) {

        }

        for (int i = 0; i < 100; i++) {
            //写代码
        }

        int[] arr = {100, 102, 104};
        /*for (int i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }*/


        boolean b=true;
        if (b) {
            //代码
        }

        int i=10;
        if (i%2==0) {

        }

        int k=3;
        switch (k) {

        }


        System.out.println(3);
        System.out.println("你真帅");
        int m=1000;
        System.out.println(m);
    }
}
